Hirokazu Yamamoto
45Patents
7h-index
89Co-inventors
72Inventor score
Filing activity: Mar 31, 1987 → Apr 17, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6788450B2 | Electrophoretic device, driving method of electrophoretic device, and electronic apparatus | Physics | 55 | Expired |
| US5312495A | Process for producing high strength alloy wire | Chemistry; Metallurgy | 30 | Expired |
| US5757384A | Apparatus and method for font thinning and bolding based upon font outline | Physics | 24 | Expired |
| US6436514B1 | Ink jet recording sheet and method for producing the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5159069A | Sulfated tannins and their salts | Chemistry; Metallurgy | 9 | Expired |
| US4873166A | Liquid developer for electrophotography | Physics | 7 | Expired |
| US5844068A | Process for the preparation of polyhydroxycarboxylic acid copolymer resin | Chemistry; Metallurgy | 7 | Expired |
| US4879197A | Method of developing electronic photograph with liquid developer and cleaning excess thereof | Physics | 5 | Expired |
| US7122264B2 | Solid electrolyte type fuel battery | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9713322B2 | Fishing rod having fitting mounted on rod body | Emerging Cross-Sectional Technologies | 4 | Active |
| US6618236B1 | Magnetic head handling glove | Human Necessities | 4 | Expired |
| US7638563B2 | Polycarboxylic acid concrete admixture | Chemistry; Metallurgy | 4 | Expired |
| US7797556B2 | Image forming apparatus allowing setting item to be changed in power-saving mode | Emerging Cross-Sectional Technologies | 3 | Active |
| US11629946B2 | Mirror unit and optical module | Physics | 3 | Active |
| US6733143B1 | Light shielding structure | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6769694B2 | Magnetic fluid seal device | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US10133413B2 | Input state detection device | Physics | 1 | Active |
| US4837103A | Negative charging liquid developer for electrophotography | Emerging Cross-Sectional Technologies | 1 | Expired |
| US6372679B1 | Cr2O3-Al2O3 sintered body and processes for producing same | Chemistry; Metallurgy | 1 | Expired |
| US10150085B2 | Membrane-forming dope for carbon membranes and a method for producing a carbon hollow fiber membrane using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US7774778B2 | Device control apparatus, device control method, and computer-readable recording medium recorded with device control program | Physics | 1 | Active |
| US11219199B2 | Fishing rod | Human Necessities | 0 | Active |
| US8994041B2 | Photodiode array module and manufacturing method for same | Electricity | 0 | Active |
| US11944081B2 | Fishing rod including rod body having fitting mounted thereon | Human Necessities | 0 | Active |
| US9427708B2 | Hollow fiber membrane module | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.